tests/generic/003

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2014, Oracle and/or its affiliates.  All Rights Reserved.
   4 #
   5 # FS QA Test No. generic/003
   6 #
   7 # Tests the noatime, relatime, strictatime and nodiratime mount options.
   8 # There is an extra check for Btrfs to ensure that the access time is
   9 # never updated on read-only subvolumes. (Regression test for bug fixed
  10 # with commit 93fd63c2f001ca6797c6b15b696a484b165b4800)
  11 #
  12 seq=`basename $0`
  13 seqres=$RESULT_DIR/$seq
  14 echo "QA output created by $seq"
  15
  16 here=`pwd`
  17 tmp=/tmp/$$
  18 status=1        # failure is the default!
  19 trap "_cleanup; exit \$status" 0 1 2 3 15
  20
  21 _cleanup()
  22 {
  23     cd /
  24     rm -rf $tmp.*
  25 }
  26
  27 # get standard environment, filters and checks
  28 . ./common/rc
  29 . ./common/filter
  30
  31 # real QA test starts here
  32
  33 _supported_fs generic
  34 _supported_os Linux
  35 _require_scratch
  36 _require_atime
  37 _require_relatime
  38
  39 rm -f $seqres.full
  40
  41 _stat() {
  42         stat -c "%x;%y;%z" $1
  43 }
  44
  45 _compare_stat_times() {
  46         updated=$1      # 3 chars indicating if access, modify and
  47                         # change times should be updated (Y) or not (N)
  48         IFS=';' read -a first_stat <<< "$2"   # Convert first stat to array
  49         IFS=';' read -a second_stat <<< "$3"  # Convert second stat to array
  50         test_step=$4    # Will be printed to output stream in case of an
  51                         # error, to make debugging easier
  52         types=( access modify change )
  53
  54         for i in 0 1 2; do
  55                 if [ "${first_stat[$i]}" == "${second_stat[$i]}" ]; then
  56                         if [ "${updated:$i:1}" == "N" ]; then
  57                                 continue;
  58                         fi
  59                         echo -n "ERROR: ${types[$i]} time has not been updated "
  60                         echo $test_step
  61                 elif [ "${updated:$i:1}" == "N" ]; then
  62                         echo -n "ERROR: ${types[$i]} time has changed "
  63                         echo $test_step
  64                 fi
  65         done
  66 }
  67
  68 _scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed"
  69 _scratch_mount "-o relatime"
  70
  71 if [ "$FSTYP" = "btrfs" ]; then
  72         TPATH=$SCRATCH_MNT/sub1
  73         $BTRFS_UTIL_PROG subvolume create $TPATH > $seqres.full
  74 else
  75         TPATH=$SCRATCH_MNT
  76 fi
  77
  78 mkdir $TPATH/dir1
  79 echo "aaa" > $TPATH/dir1/file1
  80 file1_stat_before_first_access=`_stat $TPATH/dir1/file1`
  81
  82 # Accessing file1 the first time
  83 sleep 1
  84 cat $TPATH/dir1/file1 > /dev/null
  85 file1_stat_after_first_access=`_stat $TPATH/dir1/file1`
  86 _compare_stat_times YNN "$file1_stat_before_first_access" \
  87         "$file1_stat_after_first_access" "after accessing file1 first time"
  88
  89 # Accessing file1 a second time
  90 sleep 1
  91 cat $TPATH/dir1/file1 > /dev/null
  92 file1_stat_after_second_access=`_stat $TPATH/dir1/file1`
  93 _compare_stat_times NNN "$file1_stat_after_first_access" \
  94         "$file1_stat_after_second_access" "after accessing file1 second time"
  95
  96 # Mounting with nodiratime option
  97 _scratch_cycle_mount "nodiratime"
  98 file1_stat_after_remount=`_stat $TPATH/dir1/file1`
  99 _compare_stat_times NNN "$file1_stat_after_second_access" \
 100         "$file1_stat_after_remount" "for file1 after remount"
 101
 102 # Creating dir2 and file2, checking directory stats
 103 mkdir $TPATH/dir2
 104 dir2_stat_before_file_creation=`_stat $TPATH/dir2`
 105 sleep 1
 106 echo "bbb" > $TPATH/dir2/file2
 107 dir2_stat_after_file_creation=`_stat $TPATH/dir2`
 108 _compare_stat_times NYY "$dir2_stat_before_file_creation" \
 109         "$dir2_stat_after_file_creation" "for dir2 after file creation"
 110
 111 # Accessing file2
 112 file2_stat_before_first_access=`_stat $TPATH/dir2/file2`
 113 sleep 1
 114 cat $TPATH/dir2/file2 > /dev/null
 115 file2_stat_after_first_access=`_stat $TPATH/dir2/file2`
 116 _compare_stat_times YNN "$file2_stat_before_first_access" \
 117         "$file2_stat_after_first_access" "after accessing file2"
 118 dir2_stat_after_file_access=`_stat $TPATH/dir2`
 119 _compare_stat_times NNN "$dir2_stat_after_file_creation" \
 120         "$dir2_stat_after_file_access" "for dir2 after file access"
 121
 122 # Mounting with noatime option, creating a file and accessing it
 123 _scratch_cycle_mount "noatime"
 124 echo "ccc" > $TPATH/dir2/file3
 125 file3_stat_before_first_access=`_stat $TPATH/dir2/file3`
 126 sleep 1
 127 cat $TPATH/dir2/file3 > /dev/null
 128 file3_stat_after_first_access=`_stat $TPATH/dir2/file3`
 129 _compare_stat_times NNN "$file3_stat_before_first_access" \
 130         "$file3_stat_after_first_access" "after accessing file3 first time"
 131
 132 # Checking that the modify and change times are still updated
 133 file1_stat_before_modify=`_stat $TPATH/dir1/file1`
 134 sleep 1
 135 echo "xyz" > $TPATH/dir1/file1
 136 file1_stat_after_modify=`_stat $TPATH/dir1/file1`
 137 _compare_stat_times NYY "$file1_stat_before_modify" \
 138         "$file1_stat_after_modify" "after modifying file1"
 139 sleep 1
 140 mv $TPATH/dir1/file1 $TPATH/dir1/file1_renamed
 141 file1_stat_after_change=`_stat $TPATH/dir1/file1_renamed`
 142 _compare_stat_times NNY "$file1_stat_after_modify" \
 143         "$file1_stat_after_change" "after changing file1"
 144
 145 # Mounting with strictatime option and
 146 # accessing a previously created file twice
 147 _scratch_cycle_mount "strictatime"
 148 cat $TPATH/dir2/file3 > /dev/null
 149 file3_stat_after_second_access=`_stat $TPATH/dir2/file3`
 150 _compare_stat_times YNN "$file3_stat_after_first_access" \
 151         "$file3_stat_after_second_access" "after accessing file3 second time"
 152 sleep 1
 153 cat $TPATH/dir2/file3 > /dev/null
 154 file3_stat_after_third_access=`_stat $TPATH/dir2/file3`
 155 _compare_stat_times YNN "$file3_stat_after_second_access" \
 156         "$file3_stat_after_third_access" "after accessing file3 third time"
 157
 158 # Btrfs only: Creating readonly snapshot. Access time should never
 159 # be updated, even when the strictatime mount option is active
 160 if [ "$FSTYP" = "btrfs" ]; then
 161         SPATH=$SCRATCH_MNT/snap1
 162         btrfs subvol snapshot -r $TPATH $SPATH >> $seqres.full
 163         dir2_stat_readonly_before_access=`_stat $SPATH/dir2`
 164         sleep 1
 165         ls $SPATH/dir2 >> $seqres.full
 166         cat $SPATH/dir2/file3 >> $seqres.full
 167         dir2_stat_readonly_after_access=`_stat $SPATH/dir2`
 168         _compare_stat_times NNN "$dir2_stat_readonly_before_access" \
 169                 "$dir2_stat_readonly_after_access" "for dir in readonly subvol"
 170         file3_stat_readonly_after_access=`_stat $SPATH/dir2/file3`
 171         _compare_stat_times NNN "$file3_stat_after_third_access" \
 172                 "$file3_stat_readonly_after_access" "for file in readonly subvol"
 173 fi
 174
 175 # Mounting read-only. Access time should never be updated, despite the
 176 # strictatime mount option.
 177 sleep 1
 178 dir2_stat_before_ro_mount=`_stat $TPATH/dir2`
 179 file3_stat_before_ro_mount=`_stat $TPATH/dir2/file3`
 180 _scratch_cycle_mount "ro,strictatime"
 181 ls $TPATH/dir2 > /dev/null
 182 cat $TPATH/dir2/file3 > /dev/null
 183 dir2_stat_after_ro_mount=`_stat $TPATH/dir2`
 184 _compare_stat_times NNN "$dir2_stat_before_ro_mount" \
 185         "$dir2_stat_after_ro_mount" "for dir in read-only filesystem"
 186 file3_stat_after_ro_mount=`_stat $TPATH/dir2/file3`
 187 _compare_stat_times NNN "$file3_stat_before_ro_mount" \
 188         "$file3_stat_after_ro_mount" "for file in read-only filesystem"
 189
 190 # success, all done
 191 _scratch_unmount
 192 echo "Silence is golden"
 193 status=0
 194 exit